bugbiteme / demo-tform-basic-ec2-with-ansible

Spin up and connect to an EC2 instance

Instructions

You can use terraform on its own to spin up a number of Red Hat Enterprise Linux EC2 instances in AWS (version 8.4)

Feel free to set the variables how you see fit

Terraform also produces a dynamic Ansible inventory file that can be used in playbooks for configuring these sytems.

As an example, I have created a playbook that installs httpd on each new system, along with a hello message in index.html, diplaying the OS version

Prerequisits

Install the following on your local system:

• AWS cli
• terraform
• ansible (core)

To run the terraform script on its own

terraform init
terraform apply (type "yes" when prompted)

output shows all the public IP addresses, as well as a cli string to ssh into one of them.

delete everything by typing
terraform destroy

To run the ansible playbook

Once your ec2 instances have been provisioned, run the command
ansible-playbook -i inventory playbook.yml

This will accomplish installing and testing httpd

To run them on one swoop

I have created a helper sctipt called 'provision-and-config.sh' that does it all together

sh ./provision-and-config.sh <optional number of instances>
examples:

Just one ec2 instance (default)
sh ./provision-and-config.sh

ec2 instances == 3
sh ./provision-and-config.sh 3

run terraform destroy afterwards when you are done

For RHEL Insight Setup, run these scripts instead

Additional playbooks have been added to register your EC2 instances with a RHEL subscription and add them to Insights inventory:

• rhel-reg-insights.yml

Usage:
ansible-playbook -i inventory rhel-reg-insights.yml --vault-id @prompt

Note:
vault data set in vars/reg-data.yml and must be encrypted with ansible-vault

ansible-vault edit vars/reg-data.yml
.
.
username: <RH Subscription Username>
password: <RH Subscription Password>

Playbook to remove EC2 instances from the Insights inventory and unregister them:

• rhel-unreg-insights.yml

Scripts to provision/deprovision and register/unregister have been created as well:

• rhel-provision-and-register.sh
• rhel-deprovision-and-unregister.sh

Additional Notes

How to activate RHEL with your subscription via the command line

Prerequisites

• Have a valid Red Hat Subscription

Steps

• sudo subscription-manager register --username <username> --password <password> --auto-attach

How to register your RHEL system with Red Hat Insights via the command line (RHEL 8.4)

Prerequisites

• Activate your RHEL (see above)
• Check Insights on how to add based on version of RHEL

Steps

• sudo insights-client --register or
• sudo rhc connect -u <username> -p <password>

To unregister RHEL system with Insights (decommisioning)

• sudo insights-client --unregister

To ungregister RHEL system from subscription

• sudo subscription-manager unregister